Electric battery.



PATENTE) JULY 18, 1905.

P. J. KAMPERDYK.

ELECTRIC BATTERY.

APPLIOATION FILED AP11.2.1904.

2 SHEETS-SHEET l.

No. 794,864. PATENTBD JULY 1a, 1905. P. yJ. KAMPBRDYK. ELECTRIC BATTERY.

APPLICATION FILED APE. 2.1904.

2 BEBES-SHEET 2.

munzw s4 Gamm o9., Llmocmwngns, ausmnmon, o. c

NiTED STATES Patented July 18, 1905.

PATENT OEEICE.

ELECTRIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 794,864, dated July 18, 1905.

Application filed April 2, 1904:. Serial No. 201,256.

T0 a/ZZ whmn it muy concern.-

Be it known that I, PIERRE J osErH KAMPER- DYK, a subject of the King of Belgium, residing in the city of New York, borough of Manhattan, in the county and State of New York, have invented a certain new and useful Improvementin Electric Batteries, of which the following i's a specification.

The invention relates to the construction of a primary cell and to the arrangement and connections of the electrodes therein.

The object of the invention is to provide a porous cup or compartment having a wall adapted to serve as a part of the positive-pole electrode, which wall may be thin to permit the electrodes on opposite faces thereof to be close together and strengthened by means serving to increase the conductivityT of the wall, thus correspondingly increasing the efficiency of the cell.

Another object is to so arrange the electrodes relatively to each other and to the other portions of the cell as to produce a maximum of energy with a minimum of space occupied.

Another important object of the invention is to provide a containing vessel of small cost in which the above arrangement may be easily and inexpensively made.

The invention consists in certain novel features and details of construction by which the above objects are attained to be hereinafter described.

The accompanying drawings form a part of this specification and show the invention as it is carried out in practice.

Figure l is a plan view of a cell having two negative-pole electrodes arranged in accordance with the invention. Fig. 2 is a corresponding transverse vertical section, partly in elevation, the plane of section being indicated by the line 2 2 in Fig. 1. Fig. 3 is a plan view corresponding to Fig. l, but showing a cell having one negative-pole electrode. Fig. 4 is a horizontal section on a larger scale throughv a portion of the wall of the porous cup or compartment. Fig. 5 is a plan view showing a modification. In this form the porous cup is shown as adapted to serve in a common type of primary cell or in electrolytic processes. Fig. 6 is a corresponding vertical section taken on the line 6 6 in Fig. 5, and Fig. 7 is a transverse section on the line 7 7 in the same figure. Fig. 8 is a vertical section, partly in elevation, showing another modification in the construction of the cup.

Similar letters of reference indicate like parts in all the figures.

Referring to Figs. 1 and 2, A indicates a receptacle or exterior vessel of the primary cell made in rectangular form of any suitable material not affected by acids and containing the exciting liquid. The vessel, as illustrated in those figures, is provided with two partitions E E, parallel with'each other and the adjacent sides of the vessel and extending its full depth. Each partition is divided in two places, the

`vertical openings or intervals e thus provided being opposite each other and receiving two plates C C, of Zinc, serving as negative-pole electrodes, such openings serving to permit the exciting liquid to circulate and maintain uniform density in all parts of the vessel. On the partitions adjacent to the zinc plates and on each side thereof are` grooves e e', formed on the inner faces, the opposite pairs serving to receive and support carbon plates B B,inserted from above, with their margins engaged in the grooves and in similar grooves ca' a in the bottom of the vessel, the joint being made waterproof by any suitable cement. Thus arranged the space between the partitions is divided into three compartments separated by two intervals, in which are the negative-pole electrodes. the outer walls of the vessel are marked E E and the larger central compartment E2. Each serves the function of a porous cup, but with the wall B, presented toward the zinc, alone having the porous quality. The outer compartments contain each a positivepole electrode D, shown as composed of a plurality of carbon pencils arranged vertically in' rows and joined at their upper and lower ends to plates or strips extending the length of the several series, and the central compartment E2 contains two such carbon electrodes. All the compartments are supplied with depolarizing liquid, which may circulate from each to the others through conduits or channels t c, cored or otherwise pro- The compartments adjacent to IOO duced in the bottom of the vessel A and having openings a2 a2 in each compartment. Braces E3 E3 are introduced between the central portion of each partition and the adjacent side wall to support such portions, and the vertical openings e e in the partitions are provided with projections E* E4, serving to maintain the Zincs C C out of contact with the walls B B and parallel with the faces thereof, while permitting the exciting liquid to circulate freely. rlhe negative-pole electrodes are joined by a wire C and the positive-pole electrodes by a wire D', to which is also connected the several carbon plates B B, thus greatly increasing the depolarizing-surface. To permit the positive and negative pole electrodes to be placed close together, the porous carbon plates should be as thin as is consistent with the required strength. I am able to use extremely thin-porous walls by reason of the introduction of a series of wires B in each, which may be placed in the mold in the form of a frame or network or a single wire bent upon itself to serpentine form in long convolutions, as indicated in Fig. 8. The ends of the wires are brought together and project from the upper edge of the plate, where they are joined to the wire D', above referred to. For lconvenience of illustration the positive-pole eleotrodes in Figs. 1, 2, and 3 are shown at a greater distance from the porous Walls B B than they should be in practice. As above stated, the electrodes should be in close proximity to the plate, so as to lessen the internal resistance of the element. The strengthening-wire must be of a metal not attacked by acids and of high conductivity, as platinum, or, preferably, on the score of economy, of a good conducting metal, as copper, coated with a covering B2 of incorroding conducting metal, as platinum. By employing a single wire carefully plated the danger of exposing the interior metal through uncoated ends of wires or breaks in the covering, liable to occur in constructing a framework of many wires, is largely avoided and the conductor thus insured throughout its length against corrosion and severance.

The cell With two zinc plates above described offers the advantages of high eiicienoy With small bulk and is the most desirable form for general service, as will be understood. Fig. 3 shows a cell similar in construction, but omitting the central compartment and containing a single negative-pole electrode C2 between two porous carbon plates B3 B3, forming the end compartments E'VE, connected by channels and having openings thereto at t3 (t3. The positive electrodes D2 D2 are connected together and to the porous walls as before.

The containing vessel with its partitions may be molded in wood ber, papier-mch, or other suitable material, properly coated interiorly to resist the action of theliquids and negative-pole electrodes O3 C3 are zinc plates arranged parallel to the adjacent walls of the cup. In these figures the strengthening and conducting wires B, embedded in the walls of the cup, are shown as extending across the bottom. Fig. 8 shows the wire bent as above described and lying in the side Walls alone.

Although I have described the plates B as carbon and prefer such by reason of the additional depolariZing-surface obtained, it will be understood that plates of unglazed earthenware or other porous material may be substii tuted, and the series of carbon pencils shown as the positive-pole electrodes may be replaced by other forms of carbon or other materials having the required properties.

I claiml. In a battery-cell, a vessel, partial partitions therein porous plates or walls supported by said partitions and forming with the latter separated compartments serving as porous cups, positive-pole electrodes received in said compartments, a negative-pole electrode in the interval between each compartmentand the next, and means for supporting said negative-pole electrodes in said intervals and permitting the circulation therethrough of the exciting liquid in said vessel.

2. In a battery-cell, a vessel, partial partitions therein porous plates or walls supported by said partitions and forming with the latter separated compartments serving as porous cups, positive-pole electrodes received in said compartments, a negative-pole electrode in the interval between each compartment and the next, means for supporting said negativepole electrodes in said intervals and permitting the circulation therethrough of the exciting liquid in said vessel, and means for permitting the circulation of a depolarizing liquid in and between the several compartments.

8. In a battery-cell, a vessel, partial partitions therein, porous plates of carbon supported by said partitions and forming with the latter separated compartments serving as porous cups, in combination with positivepole electrodes received in said compartments and negative-pole electrodes between adjacent compartments, and a connection to said positive-pole electrodes from said plates, whereby the latter serve as part of the positive-pole electrode of the battery.

4. In a two-fluid primary battery, a containing vessel, a porous partition therein sepalOO IIO

rating the exciting and depolarizing liquids and formed of material adapted to Serve as part of the positive-pole electrode of said battery, an electrode on one side of said partition, an electrode of opposite polarity on the other side thereof, and a conductor connecting said partition to the electrode of the same polarity as such partition.

5. A porous cup for a primary battery,h'av ing its wallformed of carbon and adapted to Contain a carbon electrode and a depolarizing agent, a series of Wires embedded in said Wall and serving to strengthen the latter and increase its conductivity, the said Wall serving as part of the positive-pole electrode of the battery. 

